EP2887170A1 - Mitigeur thermostatique - Google Patents

Mitigeur thermostatique Download PDF

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Publication number
EP2887170A1
EP2887170A1 EP14003814.2A EP14003814A EP2887170A1 EP 2887170 A1 EP2887170 A1 EP 2887170A1 EP 14003814 A EP14003814 A EP 14003814A EP 2887170 A1 EP2887170 A1 EP 2887170A1
Authority
EP
European Patent Office
Prior art keywords
mixing valve
thermostatic mixing
electric motor
thermostatic
linearhubelement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14003814.2A
Other languages
German (de)
English (en)
Other versions
EP2887170B1 (fr
Inventor
Kai Huck
Tanja Schwartpaul
Achim Mielke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grohe AG
Original Assignee
Grohe AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grohe AG filed Critical Grohe AG
Publication of EP2887170A1 publication Critical patent/EP2887170A1/fr
Application granted granted Critical
Publication of EP2887170B1 publication Critical patent/EP2887170B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/13—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
    • G05D23/1306—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids
    • G05D23/1313—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids without temperature sensing element
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/04—Water-basin installations specially adapted to wash-basins or baths
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/13—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
    • G05D23/1393—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures characterised by the use of electric means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1925—Control of temperature characterised by the use of electric means using a combination of auxiliary electric and non-electric power

Definitions

  • the invention relates to a thermostatic mixing valve for mixing cold water and hot water and for adjusting the mixed water temperature according to the preamble of claim 1.
  • thermostatic mixing valve for example from the DE 10 2006 032 018 A1 known, according to which the thermostatic mixing valve for adjusting the mixed water temperature in a sanitary fitting, such as a shower, can be installed.
  • thermostatic mixing valve From the DE 10 2008 058 515 A1 is a generic thermostatic mixing valve is known in which the setting of the mixed water temperature is no longer manually specified by a user via a control knob, but rather the thermostatic mixing valve is remotely controlled by the user.
  • the thermostatic mixing valve on an electric motor which acts via a gear stage on a stroke-adjustable valve body with which the size of hot water and cold water control columns can be varied over a control range, in response to a user set mixed water temperature setpoint.
  • the electric motor is associated with a sensor element for detecting at least one setting position of the thermostatic mixing valve.
  • the sensor element is a switch which cooperates with a cam ring rotatably coupled to the electric motor. This has two cams of different sizes, with the help of the adjustment range of the thermostatic mixing valve can be fixed and / or a calibration adjustment position for calibration of the mixing valve can be detected.
  • the drive spindle of the electric motor with a space-consuming running, in cross section in approximately cup-shaped regulating nut coupled via a spline rotation.
  • the cup-shaped regulating nut has an internal thread which cooperates with an external thread of the overload unit. In an adjusting process, the regulating nut is rotated, resulting in a corresponding lifting movement of the overload unit.
  • the object of the invention is to provide a thermostatic mixing valve whose available adjustment range is increased by simple means and by reducing the space and component requirements.
  • the invention is based on the fact that in the DE 10 2008 058 515 A1 the detection of the rotational position of the electric motor and the determination of the controllable adjusting range of the thermostatic mixing valve is limited to an electric motor rotation angle of far below 360 °.
  • the Linearhubelement is turned on in the force path of the gear stage and acts as a signal generator with the sensor element together to the parking position of the electric motor to capture. In this way, the position detection is no longer done via a cam ring with associated switch, but rather by the Linearhubelement.
  • the sensor element can detect setting positions independently of the angle of rotation of the electric motor traveled during the setting process.
  • the adjustment range of the mixing valve can readily be designed so that it extends between the flow temperatures of the cold water and the hot water.
  • the control positions detectable by the sensor element are, for example, a lower actuating position and an upper actuating position, which define the available, controllable actuating range of the thermostatic mixing valve.
  • the sensor element can detect an additional calibration adjustment position, which lies approximately in the middle between the lower and upper adjustment position. For a complete passage through the adjustment range, the covered angle of rotation of the electric motor can be greater than 360 °.
  • the gear stage of the thermostatic mixing valve may have as input element a drive spindle of the electric motor. This is in driving connection with the Linearhubelement.
  • a particularly simple drive connection results when the drive spindle has an external thread, which is in engagement with a radially outer internal thread of the linear lifting element.
  • the technicallyarhubelement is preferably arranged coaxially with the drive spindle of the electric motor.
  • the Linearhubelement can form the output element of the gear stage, which acts directly or indirectly on the valve body. It is preferred if the linear lifting element does not act on the valve body directly, but indirectly via an overload unit and a thermostatic element.
  • the overload unit is elastically resilient at excessively large force application.
  • thermostatic element With the help of the thermostatic element temperature fluctuations in the mixed water temperature are compensated by the fact that its length is variable depending on the temperature fluctuations, whereby the size of the cold water and hot water control column adjusted accordingly becomes.
  • the structure and operation of the thermostatic element may be identical to those in the DE 10 2008 058 515 A1 be disclosed thermostats.
  • the overload unit may be a cylindrical sleeve. This is mounted in an axial direction in a bore of a valve housing (that is, the head piece) linearly adjustable.
  • the sleeve can have an end wall facing the linear lifting element, with which the linear lifting element can be brought into pressure installation.
  • On the end face facing away from a pressure piece is resiliently mounted by means of a return spring.
  • the pressure element of the overload unit is in contact with the thermostatic element, which in turn is coupled with the valve body.
  • the overload unit, the thermostatic element and the valve body together with the above-mentioned valve housing (consisting of the head piece and a hot water seat) preferably form a cartridge.
  • the cartridge is driveably connectable as a pre-assembly with the electric motor and the Linearhubelement.
  • the Linearhubelement may have a signal generator, such as a radially outwardly projecting flag, which cooperates with the sensor element.
  • the flag may have slots corresponding to predetermined setting positions, respectively.
  • the sensor element may be arranged fixed to the housing as an optical sensor with light source and detect the position of the slots.
  • the control unit for controlling the electric motor can be integrated as a controller in a control loop for controlling the actual mixing water temperature to the user-specified predetermined mixed water temperature.
  • the control circuit may comprise a temperature sensor which is arranged in a mixing water chamber of the thermostatic mixing valve and is in signal communication with the control unit of the electric motor.
  • the thermostatic mixing valve 1 is shown in a mounting position, in a sanitary fitting 3 for about a shower.
  • the thermostatic mixing valve 1 has no actuating toggle for manual setting of the mixed water temperature, but rather an electric motor 5, the control unit 7 in non-contact signal connection (in the Fig. 1 shown with dashed arrows) with a user-operable remote control unit (not shown in the figures).
  • the remote control unit By means of the remote control unit, the user direct a desired mixed water temperature T soll to the control unit 7.
  • the control unit 7 is connected to the electric motor 5 and in the Fig. 1 indicated, arranged in the mixed water chamber 11 temperature sensor 9 in a control loop R incorporated.
  • control unit 7 Depending on the user side predetermined desired mixed water temperature T set via the control circuit R is an approximation of the detected by the temperature sensor 9 actual mixed water temperature T is to the user-predetermined desired mixed water temperature T.
  • the control unit 7 generates for this purpose an actuating signal with which the electric motor 5 for adjusting the mixing valve 1 can be actuated.
  • the electric motor 5 has a drive spindle 13, which forms an input element of a gear stage 15.
  • the output element of the gear stage 15 forms a sleeve-shaped Linearhubelement 17, on the inner circumference of an internal thread is provided, which is in threaded engagement 19 with a corresponding external thread of the drive spindle 13.
  • a support plate 21 with a sleeve-shaped bearing extension 23 Radially within the tubular bearing extension 23, the Linearhubelement 17 is linearly displaceable, but stored against rotation.
  • the sleeve-shaped bearing extension 23 has a slot-shaped axial guide 25, through which an axial web 27 of the linear lifting element 17 is guided with subsequent flag 29.
  • the thermostatic mixing valve 1 also has a thermostatic cartridge 31, whose housing is formed by a head piece 33 and a so-called hot water seat 35.
  • the thermostatic cartridge 31 has an open towards the linear lifting 17 recess 37, in which an overload unit 39 is arranged axially displaceable.
  • the sleeve-shaped overload unit 39 is at its, the Linearhubelement 17th facing side with an end wall 41 which is in contact with the end face 43 of the linear lifting element 17 during the adjusting process.
  • On its side facing away from the overload unit 39 has a resiliently mounted thrust piece 45 which is in contact with a thermostatic element 47.
  • the thermostatic element 47 together with a radially outer valve body 49, a motion-coupled unit in which the valve body 49 by axial adjustment, the size of the hot water and Kaftwasserregelpolts 51, 53 may vary.
  • the control gaps 51, 53 are in a conventional manner with hot and cold water supply lines 55, 57 fluidly connected. The flowing through the control gaps 51, 53 cold and hot water is mixed in the downstream mixing water chamber 11 and forwarded to the shower head.
  • Fig. 1 is the mounted in the cartridge 31 component composite, consisting of the thermostatic element 47, the valve body 49 and the overload unit 39, biased by a biasing spring 59 in the direction of the linear lifting 17.
  • the drive spindle 13 of the electric motor 5 is set in rotation, whereby the Linearhubelement 17 shifts linearly by a travel.
  • the component composite consisting of the overload unit 39, the thermostatic element 47 and the valve body 49, against the spring force of the biasing spring 59 within the cartridge 31 are axially displaced.
  • the control gaps 51, 53 for the cold water and the hot water are adjusted accordingly.
  • the setting range ⁇ y of the thermostatic mixing valve 1 is predetermined by means of a sensor element 61.
  • the sensor element 61 is an optical sensor which cooperates with three slots 63 on the flag 29.
  • the two outer slots 63 in the axial direction correspond in each case to a lower setting position y 1 and an upper setting position y 2 , which define the available setting range ⁇ y of the thermostatic mixing valve 1.
  • the central slot 63 can represent, by way of example, a calliper setting position of the electric motor 5.
  • the electric motor 5 and the linear lifting element 17 and the optical sensor 61 are shown as a pre-assembly unit 65.
  • the linear lifting element 17 is mounted together with the optical sensor 61 on a support plate 21 of the electric motor 5.
  • the connection of the pre-assembly unit 65 with the thermostatic cartridge 31 via a sleeve-shaped adapter part 67 ( Fig. 1 ), on whose opposite end faces in each case the thermostatic cartridge 31 and the pre-assembly unit 65 can be inserted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Temperature-Responsive Valves (AREA)
  • Multiple-Way Valves (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
EP14003814.2A 2013-11-15 2014-11-12 Mitigeur thermostatique Active EP2887170B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013019074.6A DE102013019074A1 (de) 2013-11-15 2013-11-15 Thermostat-Mischventil

Publications (2)

Publication Number Publication Date
EP2887170A1 true EP2887170A1 (fr) 2015-06-24
EP2887170B1 EP2887170B1 (fr) 2020-05-06

Family

ID=51903749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14003814.2A Active EP2887170B1 (fr) 2013-11-15 2014-11-12 Mitigeur thermostatique

Country Status (3)

Country Link
US (1) US10088851B2 (fr)
EP (1) EP2887170B1 (fr)
DE (1) DE102013019074A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104989845A (zh) * 2015-06-25 2015-10-21 娄底欧道科技有限公司 一种恒温龙头

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10753075B2 (en) 2016-09-26 2020-08-25 Zurn Industries, Llc Flush valve
US10578228B2 (en) 2016-09-26 2020-03-03 Zurn Industries, Llc Sensing mechanism for valve operation
IT201600108293A1 (it) * 2016-10-26 2018-04-26 Caleffi Spa Dispositivo valvolare miscelatore
DE102017108186A1 (de) * 2017-04-18 2018-10-18 Gardner Denver Deutschland Gmbh Mischventilanordnung für ein hydraulisches System, sowie Ölkühlsystem und Kompressoranlage mit dieser
US20200256566A1 (en) * 2017-09-28 2020-08-13 Lixil Corporation Hot water supply system
USD883444S1 (en) 2018-12-04 2020-05-05 Zurn Industries, Llc Flush valve housing
JP7459690B2 (ja) * 2020-07-03 2024-04-02 株式会社デンソーウェーブ 給湯装置
US20240209603A1 (en) * 2021-07-20 2024-06-27 As America, Inc. Plastic integrated anti-scald device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0387471A2 (fr) * 1989-03-14 1990-09-19 Oras Oy Robinet mélangeur à eau froide et chaude commandé électriquement
US5058804A (en) * 1988-09-06 1991-10-22 Matsushita Electric Industrial Co., Ltd. Automatic hot water supply apparatus
DE4447893C2 (de) * 1993-01-22 2003-12-04 Hansgrohe Ag Sanitäre Mischarmatur
DE102006032018A1 (de) 2006-07-10 2008-01-17 Grohe Ag Thermostat-Mischventil zum Mischen von Kalt- und Warmwasser
DE102008058515A1 (de) 2008-11-21 2010-05-27 Grohe Ag Mischventil für Kalt- und Heißwasser

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143343A (en) * 1983-07-13 1985-02-06 Standard Telephones Cables Ltd Thermostatically controlled mixer
GB2392225B (en) * 2002-06-26 2006-09-20 Kohler Mira Ltd Improvements in or relating to thermostatic mixing valves
DE102006054131A1 (de) * 2006-11-15 2008-05-21 Hidde, Axel R., Dr. Fluidtechnische Steuerung und Regelung von Druck, Temperatur und Volumen
IL187922A (en) * 2007-12-06 2012-01-31 Eitan Rivlin Frictionless pressure balanced proportioning valve assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058804A (en) * 1988-09-06 1991-10-22 Matsushita Electric Industrial Co., Ltd. Automatic hot water supply apparatus
EP0387471A2 (fr) * 1989-03-14 1990-09-19 Oras Oy Robinet mélangeur à eau froide et chaude commandé électriquement
DE4447893C2 (de) * 1993-01-22 2003-12-04 Hansgrohe Ag Sanitäre Mischarmatur
DE102006032018A1 (de) 2006-07-10 2008-01-17 Grohe Ag Thermostat-Mischventil zum Mischen von Kalt- und Warmwasser
DE102008058515A1 (de) 2008-11-21 2010-05-27 Grohe Ag Mischventil für Kalt- und Heißwasser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104989845A (zh) * 2015-06-25 2015-10-21 娄底欧道科技有限公司 一种恒温龙头

Also Published As

Publication number Publication date
US10088851B2 (en) 2018-10-02
US20150168960A1 (en) 2015-06-18
DE102013019074A1 (de) 2015-05-21
EP2887170B1 (fr) 2020-05-06

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